Spread spectrum encoding device and method using data to send as initial values of sequence generator

(19)

(11)

EP 0 944 177 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	09.04.2003 Bulletin 2003/15

(43)	Date of publication A2:
	22.09.1999 Bulletin 1999/38

(21)	Application number: 98118087.0

(22)	Date of filing: 24.09.1998

(51)	International Patent Classification (IPC)⁷: H04B 1/707, H04J 13/00, H04L 1/00, H04J 13/02

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

19.03.1998 JP 6917198

(71)	Applicant: FUJITSU LIMITED
	Kawasaki-shi, Kanagawa 211-8588 (JP)

(72)	Inventors:
	Nagatani, Kazuo Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP) Oishi, Yasuyuki Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP) Hamada, Hajime Nakahara-ku, Kawasaki-shi, Kanagawa 211 (JP)

(74)	Representative: HOFFMANN - EITLE
	Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)

(54)	Spread spectrum encoding device and method using data to send as initial values of sequence generator

(57) An m-bit shift register (2) stores data to be sent that are generated by a data generator (1) 1 bit at a time sequentially. An orthogonal M sequence generator (3) generates an M sequence with the m bits of data to be sent that are stored in the shift register (2) as an initial value, then generates an orthogonal M sequence from that M sequence. A clock signal generator (4) generates a clock signal of frequency 2^m times the data rate of the data to be sent. The orthogonal M sequence generator (3) operates in accordance with that clock signal.

Search report